A Linux administrator was tasked with deleting all files and directories with names that are contained in the sobelete.txt file. Which of the following commands will accomplish this task?

• A.cat toDelete.txt | rm -frd
• B.cat toDelete.txt | xargs rm -rf
• C.rm -d -r -f toDelete.txt
• D.xargs -f cat toDelete.txt -rm

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A Linux administrator is troubleshooting SSH connection issues from one of the workstations.
When users attempt to log in from the workstation to a server with the IP address 104.21.75.76, they receive the following message:

The administrator reviews the information below:


Which of the following is causing the connectivity issue?

• A.The workstation has the wrong IP settings.
• B.The server's firewall is preventing connections from being made.
• C.The server has an incorrect default gateway configuration.
• D.The sshd service is disabled.

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A Linux administrator needs to expand a volume group using a new disk. Which of the following options presents the correct sequence of commands to accomplish the task?

• A.partprobe
  vgcreate
  lvextend
• B.fdisk
  partprobe
  mkfs
• C.fdisk
  pvcreate
  vgextend
• D.lvcreate
  fdisk
  partprobe

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Based on an organization's new cybersecurity policies, an administrator has been instructed to ensure that, by default, all new users and groups that are created fall within the specified values below.

To which of the following configuration files will the required changes need to be made?

• A./etc/profile
• B./etc/default/useradd
• C./etc/security/limits.conf
• D./etc/login.defs

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A systems administrator is tasked with preventing logins from accounts other than root, while the file /etc/nologin exists. Which of the following PAM modules will accomplish this task?

• A.pam_nologin.so
• B.pam_login.so
• C.pam_logindef.so
• D.pam_access.so

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